If you find some spare time, it would be great to reference a full configuration file with all possible options, as for now information is scatterred here and there and some are missing. (Expanding this page would be awesome : https://jsreport.net/learn/configuration)
the https://jsreport.net/learn/configuration page describes the configuration format, not the request input options which is what you were asking here, however if you can be specific about what can be added or what is missing in configurations docs, then all suggestions are welcome.
right now we try to put the general configuration in that page, and configuration for specific extensions are in the page of each extension (for example here is a link to an extension docs where it has a section for describing configuration), but remember that the configuration described there is different than request input options